The science to which he refers is known as Computer Voice Stress Analysis®, and Chapman is the world’s leading expert on its use as a tool for a multitude of intelligence, law enforcement and security applications.

Asked how the deadly attack on the CIA operatives might have been prevented, Chapman didn’t mince words.

“Obviously, they did not vet this guy,” he explained. “Had they tested him on CVSA, there’s no doubt in my mind that they would have found out that he was an enemy double-agent.

“They could have sat that person down and asked him a series of questions, and they would have known,” Chapman continued. “I believe with all my heart that, had this occurred, they could have saved these people’s lives.”

Chapman, the former director of the Criminal Justice Program and the Forensic Crime Laboratory at the State University of New York in Corning, shared similar thoughts about passenger screening in the case of the man news media outlets have dubbed the “Underwear Bomber.”

“If they had (CVSA) overseas, they could have asked a series of questions — what we call uncontrolled narrative testing,” he explained, “and if you would have asked him a series of questions, the system and the science would have picked up on that and the operator could have said to these people, ‘Wait a minute, you better take this guy off to the side and really interview him.’”